Madonna seemed to be holding auditions at Meatpacking District hot spot SL on Wednesday night. “She was looking for new dancers for her upcoming tour,” said a source. More than 30 wannabes formed a circle around her and conducted a dance-off. “It was pretty epic,” our spy says. “Some professionals were doing flips and spins, while the amateurs sort of just stared.” Madonna’s own deejay, Tony Touch, got on the turntables while Knicks star Danilo Gallinari and singer Eve looked on.